180
FNCA52 TJSJ 150900
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
500 AM AST THU JAN 15 2026
DISCUSSION
DAYTIME MINIMUM RH VALUES ARE EXPECTED REMAIN ABOVE THRESHOLDS
CRITERIA. WINDS WILL REMAIN FROM THE SOUTHEAST AND RANGE BETWEEN
10 AND 15 MPH WITH HIGHER GUSTS AND SEA BREEZE VARIATIONS. THE
RISK IS LOW TODAY, BUT WE ENCOURAGE PEOPLE TO STAY INFORMED.
PRZ014-160900-
SOUTHEAST COASTAL PLAINS-
500 AM AST THU JAN 15 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 40 30
TEMP (24H TREND) 87 (+2) 70 (-1) 88
RH % (24H TREND) 55 (-2) 94 (+2) 53
WIND 20FT/EARLY(MPH) SE 14 G19 E 11 E 16 G21
WIND 20FT/LATE(MPH) SE 14 G19 E 11 E 16 G21
MIXING HGT(FT-AGL/MSL)4340 4750
TRANSPORT WND (MPH) SE 17 E 14
VENT RATE (KT-FT) 65100 57000
DISPERSION 5 5
DSI 5 4 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-160900-
SOUTHERN HILLS-
500 AM AST THU JAN 15 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 50 30 50
TEMP (24H TREND) 83 (+3) 67 (-2) 84
RH % (24H TREND) 68 (-1) 98 (+4) 64
WIND 20FT/EARLY(MPH) SE 12 E 11 E 12
WIND 20FT/LATE(MPH) SE 12 E 11 E 12
MIXING HGT(FT-AGL/MSL)5070 4940
TRANSPORT WND (MPH) SE 17 E 13
VENT RATE (KT-FT) 76050 54340
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-160900-
NORTH COASTAL PLAINS-
500 AM AST THU JAN 15 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 10 40
TEMP (24H TREND) 87 (+2) 68 (-2) 87
RH % (24H TREND) 63 (-2) 100 (+3) 64
WIND 20FT/EARLY(MPH) SE 13 SE 11 E 17 G19
WIND 20FT/LATE(MPH) SE 13 SE 11 E 17 G19
MIXING HGT(FT-AGL/MSL)5220 4620
TRANSPORT WND (MPH) SE 14 E 14
VENT RATE (KT-FT) 62640 55440
DISPERSION 5 5
DSI 6 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-160900-
NORTHERN HILLS-
500 AM AST THU JAN 15 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS NONE TSTMS
CHANCE PRECIP (%) 40 0 50
TEMP (24H TREND) 85 (+1) 66 (-2) 85
RH % (24H TREND) 61 (-2) 99 (+3) 62
WIND 20FT/EARLY(MPH) SE 12 SE 9 E 13
WIND 20FT/LATE(MPH) SE 12 SE 9 E 13
MIXING HGT(FT-AGL/MSL)5660 4710
TRANSPORT WND (MPH) SE 13 E 9
VENT RATE (KT-FT) 62260 37680
DISPERSION 5 5
DSI 5 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-160900-
WEST COAST-
500 AM AST THU JAN 15 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 30 10 70
TEMP (24H TREND) 87 (+1) 69 (-1) 87
RH % (24H TREND) 64 (-1) 98 (+5) 62
WIND 20FT/EARLY(MPH) SE 16 G18 E 12 E 12
WIND 20FT/LATE(MPH) SE 16 G18 E 12 E 12
MIXING HGT(FT-AGL/MSL)4960 4290
TRANSPORT WND (MPH) SE 17 E 8
VENT RATE (KT-FT) 74400 30030
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-160900-
EASTERN INTERIOR-
500 AM AST THU JAN 15 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 50 40 50
TEMP (24H TREND) 84 (+2) 68 (-2) 85
RH % (24H TREND) 69 (0) 100 (+2) 66
WIND 20FT/EARLY(MPH) SE 13 SE 12 E 11
WIND 20FT/LATE(MPH) SE 13 SE 12 E 11
MIXING HGT(FT-AGL/MSL)5030 5340
TRANSPORT WND (MPH) SE 16 E 14
VENT RATE (KT-FT) 70420 64080
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-160900-
LUQUILLO MOUNTAIN RANGE-
500 AM AST THU JAN 15 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 40 40
TEMP (24H TREND) 79 (+2) 66 (-3) 80
RH % (24H TREND) 76 (+1) 100 (+1) 73
WIND 20FT/EARLY(MPH) SE 12 SE 10 E 10
WIND 20FT/LATE(MPH) SE 12 SE 10 E 10
MIXING HGT(FT-AGL/MSL)3640 4470
TRANSPORT WND (MPH) SE 17 E 14
VENT RATE (KT-FT) 54600 53640
DISPERSION 5 5
DSI 6 5 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-160900-
CENTRAL MOUNTAIN RANGE-
500 AM AST THU JAN 15 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 40 10 70
TEMP (24H TREND) 83 (+4) 64 (-3) 84
RH % (24H TREND) 65 (-3) 100 (+5) 63
WIND 20FT/EARLY(MPH) SE 11 SE 6 E 9
WIND 20FT/LATE(MPH) SE 11 SE 6 E 9
MIXING HGT(FT-AGL/MSL)5710 5150
TRANSPORT WND (MPH) SE 15 E 8
VENT RATE (KT-FT) 74230 36050
DISPERSION 5 5
DSI 5 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-160900-
CAYEY MOUNTAIN RANGE-
500 AM AST THU JAN 15 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 50 30
TEMP (24H TREND) 78 (+1) 67 (-1) 80
RH % (24H TREND) 78 (+3) 100 (+1) 74
WIND 20FT/EARLY(MPH) SE 10 SE 9 E 10
WIND 20FT/LATE(MPH) SE 10 SE 9 E 10
MIXING HGT(FT-AGL/MSL)4100 4940
TRANSPORT WND (MPH) SE 17 E 14
VENT RATE (KT-FT) 61500 59280
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-160900-
VIEQUES-
500 AM AST THU JAN 15 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 30 30
TEMP (24H TREND) 85 (0) 71 (-2) 85
RH % (24H TREND) 63 (0) 100 (+2) 62
WIND 20FT/EARLY(MPH) SE 14 G18 SE 13 G17 E 13
WIND 20FT/LATE(MPH) SE 14 G18 SE 13 G17 E 13
MIXING HGT(FT-AGL/MSL)3190 3380
TRANSPORT WND (MPH) SE 18 E 17
VENT RATE (KT-FT) 51040 50700
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-160900-
CULEBRA-
500 AM AST THU JAN 15 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 30
TEMP (24H TREND) 85 (0) 73 (-2) 86
RH % (24H TREND) 65 (0) 98 (+6) 63
WIND 20FT/EARLY(MPH) SE 14 G19 SE 14 G18 E 13 G17
WIND 20FT/LATE(MPH) SE 14 G19 SE 14 G18 E 13 G17
MIXING HGT(FT-AGL/MSL)3160 3320
TRANSPORT WND (MPH) SE 20 E 18
VENT RATE (KT-FT) 53720 53120
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-160900-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
500 AM AST THU JAN 15 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 40 20 50
TEMP (24H TREND) 88 (+2) 70 (-2) 89
RH % (24H TREND) 54 (-2) 97 (+7) 52
WIND 20FT/EARLY(MPH) SE 19 G25 E 16 G20 E 18 G23
WIND 20FT/LATE(MPH) SE 19 G25 E 16 G20 E 18 G23
MIXING HGT(FT-AGL/MSL)4730 4570
TRANSPORT WND (MPH) SE 21 E 16
VENT RATE (KT-FT) 85140 63980
DISPERSION 5 5
DSI 5 5 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-160900-
SAINT THOMAS AND SAINT JOHN-
500 AM AST THU JAN 15 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 20 30
TEMP (24H TREND) 85 (+1) 72 (-4) 86
RH % (24H TREND) 65 (-1) 98 (+6) 63
WIND 20FT/EARLY(MPH) SE 16 G20 SE 16 G19 E 14 G19
WIND 20FT/LATE(MPH) SE 16 G20 SE 16 G19 E 14 G19
MIXING HGT(FT-AGL/MSL)3250 3250
TRANSPORT WND (MPH) SE 20 E 17
VENT RATE (KT-FT) 55250 48750
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-160900-
ST CROIX-
500 AM AST THU JAN 15 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 20 30
TEMP (24H TREND) 86 (+1) 72 (-3) 86
RH % (24H TREND) 65 (-1) 98 (+5) 64
WIND 20FT/EARLY(MPH) SE 16 G19 E 14 G18 E 14 G18
WIND 20FT/LATE(MPH) SE 16 G19 E 14 G18 E 14 G18
MIXING HGT(FT-AGL/MSL)3780 4060
TRANSPORT WND (MPH) SE 22 E 20
VENT RATE (KT-FT) 71820 69020
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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